Knob-lock



L. HUFFMAN.

KNOB LOCK.

APPLICATION FILED MAR. 3. 1919.

1,393,021. Patented 001 11, 1921.

2 SHEETSSHEET I.

8 E I MEMO/2' 1 1'1 .6, Z0015 56 091401! L; HUFFMAN."

KNOB LOCK.

APPLICATION FILED MM. 3, 1919.

Patented Oct. 11, 1921.

2 SHEETS-SHEET 2.

mymron Zea/J Z UFFMAN- A TTOHNEY UNITED STATES PATENT OFFICE.

LOUIS HUFFMAN, OF TORONTO, ONTARIO, CANADA.

KNOB-LOCK.

Application filed March 3,

To all whom it my camera:

Be itknown that I, LOUIS HUFFMAN, a subject of the King of Great Britain, residing at Toronto,- county of York, Province of Ontario, Canada, have invented acertam new and useful Improvement in Knob- Locks, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make .and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to knob locks and an object sought is to provide an improved construction that may be readily and conveniently manipulated to operate the looking mechanism. In this construction the knob may be locked by pressing a button from the inside of the door and released by turning the knob upon that side of the door and the locked mechanism may be released by a key from the outside.

In the accompanying drawings:

Figure 1 is a horizontal section through the axis of the knob spindles and adjacent parts and portion of the door, the parts being in their unlocked position.

Fig. 2 is a detail showing the push button and pawl carried thereby.

Fig. 3 is a plan view of the knob spindles, and a bearing sleeve therefor, looking from the upper portion of Fig. 1, the knobs being removed. I

Fig. 4 is an end view of the parts shown in Fig. 2.

Fig. 5 is a view similar to Fig. 3, the spindle of the inside knob having been removed.

Fig. 6 is a section on the'line VL-VI Fig.

Fig. 7 is an elevation of one of the escutcheons looking from the side which is toward the door when assembled.

Fig. 8 is a view similar to Fig. 1, the parts being shown in the position in which the locking apparatus is engaged to prevent the turning of the knob spindles.

Fig. 9 is a view similar to Fig. -5, looking at the opposite side to that shown in the latter figure. I

Fig. 10 is a View similar to Fig. 3, showing the opposite side to that shown in the latter figure. r I a Fig. 11 is a side elevation of the sleeve I dfiached from the rest of the apparatus.

Specification of Letters Patent.

REISSUED Patented Oct. 11, 1921. 1919. Serial No. 280,414.

on the line XIIXII .Fig. 14 is a detail section on the line XIV'-XIV Fig. 8.

A is the door, B the latching and locking bolt, C the frame in which the bolt B reciprocates. l) is a spring, acting at one end against the casin C and at the other end against the bolt to force the bolt B into its latched or locked position. E is a yoke pinned at one end to the inner end of the bolt B. The yoke is acted upon by the knob to reciprocate the same and operate the bolt B.

a is the inside knob. This has an axial aperture formed therethrough. a is the knob shank and a is a tubular spindle to which the knob a is by a set screw a The spindle a is revided with an aperture 0; (fig. 3) through its wall and is provided with a tongue a extending into said aperture from the central part of the outer edge thereof. It is also provided with an aperture or having converging inner edges a a which form means for centering the moving parts of the apparatus and returning them to their normal position as hereinafter described. Upon the other side of the spindle a (Fig. 10) there is formed the substantially square aperture or having a narrow slot a extending into the outer edge thereof at the center of said edge. There is also a narrow slot 0: extending from the center of the inner edge of the slot a longitudinally for the whole remaining length of the spindle. This latter slot is enlarged at a and provided with screw threads into which the set screw a (Fig. 8) engages to bind the shank a to the spindle a i5 is the outer knob which also has axial cal spindle of the knob I), this is made in two parts 6 and b which are shaped to fit into each other at their contacting ends so.

that they rotate as one piece, as indicated by dotted lines in Fig. 1. There is a narrow. slot b (Fig. 5) o for nearly the entire length of-the spindle. Upon the other side. of the.

spindle-part 6 (Fig. 9) there is a laterally enlarged slot or aperture 6 and this edge and center of the slot (1. There is a extends in a narrow slot 6'' from the outer 5 i in which cavity said (spindles are restrained from movement in the dlI'GCtlOIl of their lengths but may have a relative turning movement.

Within the spindles a b b and coaxial therewith is the rod f. Upon this rod is a sleeve 2 having the bolt-operating lug 6 extending therefrom, said lug extends through an opening between'the of the spindle parts I) b so that when the spindle of the knob b is turned it shall carry the lug e with it and retract the bolt B in the usual way (Fig. 6). The-sleeve 6 usually may turn independent of the rod f;

Rotatably sleeved upon the rod f is an annulus g having alug1 g extendin outward therefrom through t e slot b in t e spindle b bwith the edges of which slot its sides engage. 7 indicates two pins rising from the rod 7 and adapted to prevent the movement of the annulus 9 rod 1, said annulus is the inner side of the yoke E as shown in the figures. Insaid yoke there is a slot E.- The lug 9 may engage in the slot E as shown in Fig. 8, or may be removed there from, as shown in Fig. 1. There is a second annulus 71. similar to the annulus 9 but located adjacent to the outer surface of the door, as shown in the figures. This has a lug h extending upward through the slot b and there are provided two pins 7 rising from the rod f and limitin the motion of the annulus it along the ro f. The pin f adjacent to the sleeve 6 is adapted to enage a cavity 6 in the edge of the sleeve 6 pin fits to definitely locate the angular position of the rod f.

j is a sleeve around the rod .7 adjacent to the end of said rod which is at the inside of the door. Said sleeve is of greater diameter internally than the rod f and its inner end is turned inward as indicated at j so as to engage the surface of the rod 7. f is an enlargement at the end of the rod f and there is a spring j engaging the end j of the sleeve j-and against the enlarged end f of the rod f. This spring acts to press the rod 7 toward the right and the sleeve 7' toward the left. 7' is a lug extending through the slot b in the spindle of the knob b and into the aperture (1" in the sleeve (1? of the knob a. The lug y' is pressed by the spring 1' against converging edges a of the aperture a which form cams acted upon bythe lug y' to properly center or return to its normal position when removed inner ends longitudinally of the located adjacent to f therefrom, the sleeve, or spindle, 0. f is a pin extending radially outward from the enlarged end P of the rod through the slots or apertures b of the knob b and into spindle a m is a push button against the outer surface at of which an operators finger may be pressed to actuate said button. is is a pawl pivoted at 70 in aslot in the button m above the axis of said button and having an arm k adapted to be thrownout into the slot a of the spindle a its end being adapted to engage against the end of the projection a n is a pin-lock casing engaging in the apertured walls of the knob 12. a is the barrel of the pin-lock having an enlarged mner end a engaging against a shoulder in the casin n to prevent the removal of said lock. here is a slot a in the outwardly extending portion of the barrel n whlch engages a pin f extending radially from the rod f by which construction the oscillation of the barrel n will turn the rod f while permitting the free longitudinal movement of said rod.

The pawl 72 engages the end of the rod at is below, the pivot 70 so that the action of the rod f impelled by the spring j is to turn said pawl about the pivot 70 and throw the arm 10 upward into the slot a. The pawl k also has an arm 10 which extends through a slot 72 in the spindle of the knob b and into an aperture or slot a in the spindle a and it may extend into the slot a and engage both walls thereof.

Turning to'Fig. 1 it will be observed that the two knobs aan-d b are locked together by the lug f engaging in the slot 6 in the spindle of the knob b and in the slot a of the spindle a The lug g is clear from the yoke E and both knobs may be turned to actuate the bolt B in the usual way. however, the operator presses at m upon the button m, he pushes said button in, carrying the rod f with it against the action of the spring 7'. As soon as the upper end of the arm 70 of the pawl 70 clears the end of the lugv or extension a said arm is thrown upward engaging against the end of said extension or lug as shown in Fig. 8. This holds the rod f at the limit of its travel to the left and engages E In this position the knob b is held from rotation by the engagement of the lug '9 so that the door can not be opened from the outside. However, if one turns the knob a he will carry the projection a laterally beyond the end of the engaging arm 70 of the pawl 70 and the spring 9' will then throw the rod f toward the right and the button m outward. The arm is of the pawl k engaging against the edge of the slot a the slot at in the or b 1n the spindle the lug g in the slot in the sleeve (i the pawl being thereby turned so as to bring the arm is within the spindles as shown in Fig. 1.

In the locked position shown in Fig. 8 a key may be inserted from the outside and the barrel n of the pin-lock turned to turn the rod 7, the pin f in this position extending into the broad slot or aperture b in the spindle of the knob b, and turn the knob a by the action of the pin f thereon thus carryingthe sleeve a to its disengaging position and causing the parts to act as above described to disenga e the lug g from the slot E in the yoke 0 indicates the spiral groove on the outer cylindricalsurface of the sleeve or bearing 0. The escutcheon d has a circular opening at its center, the, sleeve a passing through said opening. It is provided in each of the escutcheons d with a radially acting screw the inner end of which engages in a groove 0 If now the screw 01 is loosened the escutcheon d may be turned around the sleeve to adjust its inner surface against the door. The screw d may be then set up to holt it in its adjusted position.

In the locked position shown in Fig. 8 the rod 7 being in the extreme position toward the left the lug h 'engages in a slot or notch extending into the knob-shank b from its interior but not' to its surface and prevents the relative turning of said shank so that it cannot be unscrewed from the outside to permit access to the locking mechanism. I

What I claim is:

1. In an apparatus of the kind described having two knobs, a locking apparatus, means for moving said locking apparatus to operative position, and means actuated by the turning of one knob for releasing said locking apparatus.

2. In an apparatus of the kind described a knob spindle, a reciprocating part in said spindle adapted to lock the spindle. at the one position of said part, a spring tending to force said reciprocating part to its unlocked position, a pawl adapted to engage said knob to hold said reciprocating part in its locked position, the engagement of said pawl and said knob being such that a turnmg of the knob shall release-said engagement.

3. In an a paratus of the kind described, a knob spin 1e, a reciprocating part in said spindle adapted in one of its positions to lock said spindle, a springtending to force said reciprocating part to its unlocked position, a pawl adapted to engage said knob to hold said reciprocating part in its locked position the engagement of said pawl and said knob being such that a turning of the knob shall release said engagement, said spring also acting upomsaid pawl to engage the same with said knob.

4. In an apparatus of the kind described, a knob having a spindle, a cam face on said spindle, and a lug on said spindle, a locking mechanism, a lug adapted to act on said cam surface, a pawl on a part of the locking mechanism adapted to engage said spindle lug to hold said mechanism in looking position,- a spring acting upon said second mentioned lug to press it against said cam face and also acting upon a part of the locking mechanism to normally tend to disengage the same with the spindle lug, said pawl being actuated by said part of said locking apparatus under the impulse of said spring to cause the engagement of the same.

5. In an apparatus ,of the kind described, a knob, a cam surface on said knob, a lug acting against said cam face to rotate said knob to its normal position, said apparatus being provided with a reciprocating part, a spring acting upon said lug and said reciprocating part, a lug of limited width'on said knob, a push button, a pawl pivoted to said push button and engaging said reciprocating part, the. pivot of said pawl being out of the point of engagement between said reciprocating part and pawl so that the action of said spring shall tend to engage said pawl with said lug to hold the locking apparatus engaged, said knob being adapted to turn relative to said pawl to carry said lug out of the line of action of said pawl.

6. In an apparatus of the kind described having spindles, a bearing sleeve for said spindles having a spiral groove in its outer surface, an escutcheon surrounding said sleeve, a part of said escutcheon engaging in said groove, a set screw in said escutcheon engaging said sleeve to fix the escutcheon in its adjusted position. I

7. In an apparatus of the kind described, a bearing sleeve having a spiral groove in its outer surface, an escutcheon surrounding said sleeve and a radially adjustable set screw in said escutcheon engaging in said groove.

8, In an apparatus of the kind described, a' knob having a spindle, a locking apparatus in said spindle, said apparatus beingiadapted to be adjusted by the act of locking to prevent removal of said knob. I

In testimony whereof, I sign this specification. LOUIS HUFFMAN. 

